(Swiss Federal Laboratories for Materials Science and Technology (EMPA)) It is exactly 20 years since experts from Empa and VERT published the first test results on diesel particle filters. Today, more than 300 million vehicles worldwide are fitted with such filters. However, a VERT conference held at the Empa Academy revealed why the emission problem is by no means over.
from EurekAlert! - Social and Behavioral Science https://ift.tt/2EJkTI2
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